Tried everything mentioned at their site, nothing helps. Tried on 2 computers at the same time, facing the same problem. No virus, spyware, etc on both computers, triple checks. Problem since Thurs especially night time. It will become OK by itself especially after midnight or the next morning.
It said something is spiking their site, since so many people got hit with the same problem, likely nothing to do with our computers. However, it might be caused by the service provider, mine is Starhub.